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Chapter 12 - Disorders of Amino Acid Metabolism: Amino Acid Disorders, Organic Acidurias, and Urea Cycle Disorders with Movement Disorders

from Section II - A Metabolism-Based Approach to Movement Disorders and Inherited Metabolic Disorders

Published online by Cambridge University Press:  24 September 2020

Darius Ebrahimi-Fakhari
Affiliation:
Harvard Medical School
Phillip L. Pearl
Affiliation:
Harvard Medical School
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Summary

Humans depend on dietary proteins as a source of amino acids; they are the metabolic basis of all functional and structural proteins in the body. Some amino acids – termed essential – cannot be synthesized by the human body, such L-isoleucine and L-phenylalanine. Renal conservation of amino acids is extremely effective, with clearance values mostly below 1%. Stool nitrogen losses are about 1 g per day and are mostly of bacterial origin. In contrast to glucose and fatty acids, amino acids taken in excess of requirement cannot be stored but their carbon backbones are used for energy production.

Type
Chapter
Information
Movement Disorders and Inherited Metabolic Disorders
Recognition, Understanding, Improving Outcomes
, pp. 171 - 182
Publisher: Cambridge University Press
Print publication year: 2020

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